Cita APA (7a ed.)
Olk, D., & Cassman, K. (1995). Reduction of potassium fixation by 2 humic-acid fractions in vermiculitic soils. Wiley.
Cita Chicago Style (17a ed.)
Olk, D.C, y K.G Cassman. Reduction of Potassium Fixation by 2 Humic-acid Fractions in Vermiculitic Soils. Wiley, 1995.
Cita MLA (9a ed.)
Olk, D.C, y K.G Cassman. Reduction of Potassium Fixation by 2 Humic-acid Fractions in Vermiculitic Soils. Wiley, 1995.
Precaución: Estas citas no son 100% exactas.